| 摘要 |
<p>PURPOSE:To eliminate a detrimental induction electromotive force at a connecting part of a connecting pin to an output wiring of a board unit in which a semiconductor magnetic sensitive element is mounted. CONSTITUTION:In a current transformer in which a Hall element 3 is mounted in an air gap formed at a part of a core 2 for forming a looplike magnetic circuit, a board unit 7 in which leads 6 for a control power source and an output circuit are printed, is inserted, an external control power source is connected to the leads 6 through connecting pins 8 and an output of the element 3 is externally extended, one side of at least one surface of opposed surfaces of the air gap of the core 2 in which the unit 7 is inserted, is chamfered, a length of a gap of this part is increased larger than that of a gap of other air gap part, and the leads of the unit 7 are extended from the part.</p> |
